import type { TypedEventTarget } from '../../../esl-event-listener/core/types';
export interface IMediaQueryCondition extends TypedEventTarget<ESLMediaChangeEvent> {
    /** @returns true if current environment satisfies query */
    readonly matches: boolean;
    /** Subscribes to media query state change. Shortcut for `addEventListener('change', callback)` */
    addEventListener(callback: EventListener): void;
    /** Subscribes to media query state change. Implements {@link EventTarget} interface */
    addEventListener(type: 'change', callback: EventListener): void;
    /** Unsubscribes from media query state change event. Shortcut for `removeEventListener('change', callback)` */
    removeEventListener(callback: EventListener): void;
    /** Unsubscribes from media query state change event. Implements {@link EventTarget} interface */
    removeEventListener(type: 'change', callback: EventListener): void;
    /** Optimize condition with nested hierarchy */
    optimize(): IMediaQueryCondition;
    /** Returns serialized value of the condition (any IMediaQueryCondition instance should be able to be serializable) */
    toString(): string;
}
/** A custom event dispatched by {@link ESLMediaQuery} instances */
export declare class ESLMediaChangeEvent extends Event {
    static readonly TYPE = "change";
    readonly type: typeof ESLMediaChangeEvent.TYPE;
    /** `true` if the query is matched device conditions when event was dispatched */
    readonly matches: boolean;
    readonly target: IMediaQueryCondition;
    constructor(matches: boolean);
    /** Returns serialized value of the current {@link ESLMediaQuery} */
    get media(): string;
}